pstore/ram: Rate-limit "uncorrectable error in header" message

From: Dmitry Osipenko <[email protected]>

[ Upstream commit 7db688e99c0f770ae73e0f1f3fb67f9b64266445 ]

There is a quite huge "uncorrectable error in header" flood in KMSG on a clean system boot since there is no pstore buffer saved in RAM. Let's silence the redundant noisy messages by rate-limiting the printk message. Now there are maximum 10 messages printed repeatedly instead of 35+.

---
 fs/pstore/ram_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index 679d75a864d0..40bdf7d85a05 100644
@@ -236,7 +236,7 @@ static int persistent_ram_init_ecc(struct persistent_ram_zone *prz,
 		pr_info("error in header, %d\n", numerr);
 		prz->corrected_bytes += numerr;
 	} else if (numerr < 0) {
-		pr_info("uncorrectable error in header\n");
+		pr_info_ratelimited("uncorrectable error in header\n");
 		prz->bad_blocks++;
 	}
 

2.30.1